VAC High Performance Valve Spring Kit, BMW M52tu/M54

Put Formula-1 based engineering in your M52tu or M54 powered BMW!

This kit has been expertly designed with the aid of a Formula-1 engineer and crafted from the finest materials and manufacturing techniques. Our Spring Kits are guaranteed to out perform the competition.

VAC Steel Alloy retainers work perfect wether competitively racing or daily driving. They offer excellent weight reduction Vs. stock retainers, and are extremely strong, making this as primary choice for a street car overhaul.

Q: When would I use steel retainers vs titanium or Stock?
A: Due to the nature of the hardened steel and our precision engineering and tolerances, they have a much longer wear life than stock and titanium so they can be used in a street car for extended engine life or in a full race car, when you have other things to be concerned with! This steel retainer kit has proven itself over many races and seasons.

These kits have worked flawlessly with every camshaft we have ever installed, including those from Schrick, VAC, Sunbelt, Cat, and others. From the reliable and winning results of thousands of our spring assembles, we can say confidently this represents the best set available for your BMW at any price.

** VAC Tech Info **
Please note that because we engineered this set from a clean design; springs retainers and seats are all sold together as the superior dual spring arrangement must be used with the correct retainers and seats together and are not compatible with OEM seats/retainers, therefore springs are not available separately other than for replacements.

This kit features:

• 24 VAC dual-interference spring rated for 12,000 RPM for that added piece of mind (Racing, Over-rev/Mis-shift, etc)
• 24 VAC Hardened Steel Alloy Valve Retainers
• 24 VAC Spring Seats
• Made in the USA
• Compatible with all currently available performance camshafts for the M52tu & M54 engines (aluminum block).

Keep us in mind for your building needs. At VAC Motorsports we are a full engine machine shop and can provide any race and machining services you require.

Fitment Details:

• M52TU BMW 528i 1999, 2000; BMW Z3 Coupe 1999, 2000; Roadster 1999, 2000;
• M54 BMW 325Ci 2001, 2002, 2003, 2004, 2005, 2006; BMW 325i 2001, 2002, 2003, 2004, 2005; BMW 325xi 2001, 2002, 2003, 2004, 2005; BMW 330Ci 2001, 2002, 2003, 2004, 2005, 2006; BMW 330i 2001, 2002, 2003, 2004, 2005; BMW 330xi 2001, 2002, 2003, 2004, 2005; BMW 525i 2001, 2002, 2003, 2004, 2005; BMW 530i 2001, 2002, 2003, 2004, 2005; BMW X3 2.5i 2004, 2005; 3.0i 2004, 2005, 2006; BMW X5 2001, 2002, 2003, 2004, 2005, 2006; BMW Z3 Coupe 2001, 2002; Roadster 2001, 2002; BMW Z4 2.5i 2003, 2004, 2005; 3.0i 2003, 2004, 2005